CN107001089A - The processing of recovered water, the recovered water particularly obtained from the chemical enhanced DP technology using Tackified polymeric - Google Patents
The processing of recovered water, the recovered water particularly obtained from the chemical enhanced DP technology using Tackified polymeric Download PDFInfo
- Publication number
- CN107001089A CN107001089A CN201580059784.8A CN201580059784A CN107001089A CN 107001089 A CN107001089 A CN 107001089A CN 201580059784 A CN201580059784 A CN 201580059784A CN 107001089 A CN107001089 A CN 107001089A
- Authority
- CN
- China
- Prior art keywords
- oil
- penetrant
- recovered water
- water
- handling process
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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- 239000000126 substance Substances 0.000 title claims abstract description 35
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- 238000005516 engineering process Methods 0.000 title abstract description 24
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- 238000001471 micro-filtration Methods 0.000 claims description 13
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- 125000000129 anionic group Chemical group 0.000 claims description 8
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- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
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- 239000012465 retentate Substances 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M sodium chloride Inorganic materials [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000007832 Na2SO4 Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 3
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- 230000001070 adhesive effect Effects 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
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- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 3
- 239000003999 initiator Substances 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L magnesium chloride Substances [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 3
- 229910001629 magnesium chloride Inorganic materials 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
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- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
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- UIIMBOGNXHQVGW-UHFFFAOYSA-M sodium bicarbonate Substances [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 3
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- 239000011780 sodium chloride Substances 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 238000001694 spray drying Methods 0.000 description 3
- XLPJNCYCZORXHG-UHFFFAOYSA-N 1-morpholin-4-ylprop-2-en-1-one Chemical compound C=CC(=O)N1CCOCC1 XLPJNCYCZORXHG-UHFFFAOYSA-N 0.000 description 2
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
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- 229910019142 PO4 Inorganic materials 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 2
- 238000010796 Steam-assisted gravity drainage Methods 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- NJSSICCENMLTKO-HRCBOCMUSA-N [(1r,2s,4r,5r)-3-hydroxy-4-(4-methylphenyl)sulfonyloxy-6,8-dioxabicyclo[3.2.1]octan-2-yl] 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)O[C@H]1C(O)[C@@H](OS(=O)(=O)C=2C=CC(C)=CC=2)[C@@H]2OC[C@H]1O2 NJSSICCENMLTKO-HRCBOCMUSA-N 0.000 description 2
- 239000008365 aqueous carrier Substances 0.000 description 2
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- 238000000926 separation method Methods 0.000 description 2
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- 229910052717 sulfur Inorganic materials 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- FEBUJFMRSBAMES-UHFFFAOYSA-N 2-[(2-{[3,5-dihydroxy-2-(hydroxymethyl)-6-phosphanyloxan-4-yl]oxy}-3,5-dihydroxy-6-({[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}methyl)oxan-4-yl)oxy]-3,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl phosphinite Chemical compound OC1C(O)C(O)C(CO)OC1OCC1C(O)C(OC2C(C(OP)C(O)C(CO)O2)O)C(O)C(OC2C(C(CO)OC(P)C2O)O)O1 FEBUJFMRSBAMES-UHFFFAOYSA-N 0.000 description 1
- OYINQIKIQCNQOX-UHFFFAOYSA-M 2-hydroxybutyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCC(O)C[N+](C)(C)C OYINQIKIQCNQOX-UHFFFAOYSA-M 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 241001044369 Amphion Species 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 241000040710 Chela Species 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- 240000007049 Juglans regia Species 0.000 description 1
- 235000009496 Juglans regia Nutrition 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 1
- 229940123973 Oxygen scavenger Drugs 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Natural products P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229920002305 Schizophyllan Polymers 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
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- 125000005599 alkyl carboxylate group Chemical group 0.000 description 1
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- 150000008051 alkyl sulfates Chemical class 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
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- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 229910052593 corundum Inorganic materials 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- SCQOZUUUCTYPPY-UHFFFAOYSA-N dimethyl-[(prop-2-enoylamino)methyl]-propylazanium;chloride Chemical compound [Cl-].CCC[N+](C)(C)CNC(=O)C=C SCQOZUUUCTYPPY-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009300 dissolved air flotation Methods 0.000 description 1
- 238000007046 ethoxylation reaction Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000002955 immunomodulating agent Substances 0.000 description 1
- 229940121354 immunomodulator Drugs 0.000 description 1
- 230000002584 immunomodulator Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- YPHQUSNPXDGUHL-UHFFFAOYSA-N n-methylprop-2-enamide Chemical class CNC(=O)C=C YPHQUSNPXDGUHL-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N phosphonic acid group Chemical group P(O)(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000012673 precipitation polymerization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000012966 redox initiator Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- UZNHKBFIBYXPDV-UHFFFAOYSA-N trimethyl-[3-(2-methylprop-2-enoylamino)propyl]azanium;chloride Chemical compound [Cl-].CC(=C)C(=O)NCCC[N+](C)(C)C UZNHKBFIBYXPDV-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 235000020234 walnut Nutrition 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/40—Separation associated with re-injection of separated materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/147—Microfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/06—Tubular membrane modules
- B01D63/066—Tubular membrane modules with a porous block having membrane coated passages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/024—Oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/024—Oxides
- B01D71/025—Aluminium oxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/02—Inorganic material
- B01D71/024—Oxides
- B01D71/027—Silicium oxide
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/35—Arrangements for separating materials produced by the well specially adapted for separating solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/04—Backflushing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/20—Specific permeability or cut-off range
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/365—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds from petrochemical industry (e.g. refineries)
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Abstract
The present invention relates to the processing for the recovered water that can be obtained from the chemical enhanced DP technology using tackified polymer compound.The processing is especially comprised the steps of：Recovered water is for example obtained in the oil water mixture harvested from oil bearing bed, wherein recovered water includes tackified polymer compound；And recovered water is directed to specific filter plant, and recovered water is filtered, it is detained logistics and infiltration logistics to obtain.The technique especially allows to obtain the penetrant for including tackified polymer compound, and the penetrant is substantially free of suspended solid, free oil and oil emulsion.
Description
Technical field
The present invention relates to the processing of recovered water, and relate more particularly to the handling process using ceramic membrane.Recovered water can
Obtained in chemically intensified oil reduction method.
Background technology
The significant portion of known oil reserve is combined in the earth formation, it is necessary to which intensified oil reduction (EOR) technology comes effectively and efficient
Extract on ground.Such deposit is present in former undeveloped oil field and tradition is recovered the oil and reaches the oil field of actual limitation.
EOR technologies include the collecting method that steam-powered collecting method and non-steam drive.Steam drive method includes
SAGD (SAGD) technology.Non-steam driving method includes (for example) water drive oil and the chemical displacement of reservoir oil.
Water drive oil is included sweeps oil and extracts top by the way that the water injection of large volume, into stratum, is driven from oil bearing bed
Oil-aqueous mixtures of gained are processed.Generally, after having used such water drive oil tech on oil field, at least 40%
Crude oil initial reserves (OOIP) remain in stratum.
It has been found that the chemical displacement of reservoir oil can be used for extracting oil additionally after other technologies reach its actual limitation and use
In original oil Tanaka.Actual limitation is typically based on limited water supply.Although the chemical displacement of reservoir oil utilizes water, chemical treatment reduces water
Demand, while improving oil recovery.Chemical displacement of reservoir oil technology includes (for example) polymer displacement of reservoir oil.
Polymer displacement of reservoir oil, which is included, uses specific polymer, and recovery ratio is improved especially by viscosity regulation.It can make
With extra chemicals, such as surfactant, (common) solvent, alkali compounds and/or stable compound.Although these are chemical
Product can be used separately in aqueous, but them are applied in combination in aqueous have had been developed that considerable experience.This
Class combined treatment is sometimes referred to as alkali, surfactant and polymer (ASP) or surfactant and polymer (SP) processing.For
Some oil fields, it has been observed that such processing also causes outside water drive oil, in the earth formation additional extractions 15% to 30%
OOIP。
The different polymer technologies for being expelled to subterranean oil Tanaka are developed.For example from WO2010/133258
The known aqueous solution comprising anion or amphoteric water-soluble polymer and stabilizer, once polymer is introduced into injecting fluid,
For preventing chemical degradation.
Using being mixed when water drive oil or chemical displacement of reservoir oil technology extract oil, it is necessary to handle the oil that is extracted from oil bearing bed-water
Thing.Such handling process, which is aimed firstly at, is separated from water oil.Such handling process is also aimed to before disposing, and/or is being made
The pre-treatment recovered water re-injected into for injection water in injector well.
Different oil-aqueous mixtures treatment technologies are developed.
It is known for example from WO2014/151641 that the extraction containing scale inhibition immunomodulator compounds is recovered the oil and handled from oil bearing bed
The method of water.Methods described especially comprising recovered water is directed across into the step of ceramic membrane from recovered water to go oil removing, is used in combination
Logistics and delay logistics are permeated in obtaining.Before membrane filtration step, methods described includes several steps, including recovery of oil-water
Mixture, from oil-aqueous mixtures separate oil, make antisludging agent its inactivation, optionally precipitate and settle solid.
Also from the technique recovered the oil known to WO2014/151242 from oil bearing bed.Methods described is especially included recovered water
The step of being directed to ceramic membrane, for obtaining infiltration logistics and with suspended solid, rigid compound, free oil and oil emulsion
Retentate.Before membrane filtration step, methods described comprising recovery of oil-aqueous mixtures, from oil-aqueous mixtures separate oil,
Optionally carry out ion-exchange filtration.After membrane filtration step, methods described is permeated logistics comprising chemical treatment, optionally will
Polymerizable compound mixes with infiltration logistics, optionally mixes alkali compounds, optionally by surfactant with infiltration logistics
Compound with infiltration logistics mix, optionally to penetrant stream progress ion-exchange filtration and by penetrant streamer with being mapped to oil-containing
In layer.
Different types of ceramic membrane known in the art.For example from the U.S. 5,611,931 and the known ceramics of the U.S. 6,767,455
Membrane technology.
For harvesting and handling oil-aqueous mixtures and be known technology by the recovered water of its acquisition.The processing of recovered water
It is generally challenging, it is especially considering that the high viscosity of recovered water.Up to the present, for handling chemically intensified oil reduction work
The technology for the recovered water that skill is obtained is not yet satisfactory enough.Do not know still so far particularly makes for handling to depend on from those
The conventional treatment process of the recovered water obtained with the technique of Tackified polymeric.In fact, known technique shows limited effect
Really (if not all), for water (in penetrant) and suspended solid, free oil, grease and oil emulsion (to be concentrated
In thing) separation, while allowing the recycling of polymer.Such technique is generally not allowed the penetrant for obtaining and including polymer.Cause
This, such technique is generally not allowed recycling and is contained mostly within recovered water, for then re-injecting into oil bearing bed
Polymer.
Similar challenge is also faced in other technical fields, wherein it is 5cp or higher to need to extract viscosity from water
Fluid.For example, when needing to extract biopolymer from biomass, facing similar challenge.
The content of the invention
The present invention relates to recovered water, for example in improved chemical enhanced oil recovery (CEOR) method of use from oil-containing geological stratification
The processing of the water produced during oil recovery.Especially, it disclose processing the recovered water from chemical displacement of reservoir oil EOR, so as to
The new development that the water carrys out intensified oil reduction is reused afterwards.
The present invention is intended to provide the handling process of recovered water and the collecting method comprising the handling process, it does not show above
Prominent shortcoming.Collecting method it is an object of the present invention to provide processing method and comprising the processing method, it allows again
Circulation is included at least a portion tackified polymer compound in recovered water.
Collecting method it is a further object to provide processing method and comprising the processing method, it includes and used
Filter handles recovered water, to obtain the penetrant for wherein including polymerizable compound.
It is a further object to provide processing method and the collecting method including the processing method, wherein will before
At least a portion Tackified polymeric being expelled in oil bearing bed is re-injected into oil bearing bed.Another object of the present invention is
Processing method and the collecting method comprising the processing method are provided, it is included handles recovered water, methods described using filter
Limitation or the amount for even avoiding the chemicals in (or solution obtained from it) to be added to penetrant, then re-inject into oil-containing
In stratum.
The present invention relates to the handling process of the recovered water obtained from the method using tackified polymer compound, the processing work
Skill is comprised the steps of：
- obtain oil-aqueous mixtures；
- processing oil-aqueous mixtures, for oily product to be separated with recovered water, wherein recovered water includes tackified polymer chemical combination
Thing；
- guide recovered water to filter plant, and recovered water is filtered, it is detained logistics and infiltration logistics to obtain,
Wherein filter plant includes the microfiltration ceramic membrane unit that cutoff value is about 2 μm to about 10 μm, and wherein penetrant includes the thickening
Polymerizable compound, and wherein penetrant is substantially free of suspended solid, free oil and oil emulsion.
The present inventor shows in surprise, the type and Qi Te of the filter membrane that above-mentioned purpose can be used by carefully selecting
Property is met.The present inventor includes suspended solid, free oil, grease and breast it has been shown that filtration step allows on the one hand to obtain
The waste streams of carburetion, and on the other hand obtain the infiltration logistics comprising water and chemicals (such as polymer).Such penetrant
Have shown that the chemicals (such as polymer) that sufficient amount is provided, it is allowed to which it is reused to re-inject into oil bearing bed, and
Without further extensive treatments penetrant, while the addition of more multi-chemistry before is injected in limitation again.Up to the present, it is believed that
The method and technique known do not allow to separate oil emulsion and total suspended solid with polymer high efficiency.
Such result by selecting filter (be microfiltration ceramic membrane), and by carefully adjust its film cutoff value (
Referred to as " retention threshold value ") obtain.In fact, the present inventor is it has been shown that the cutoff value of ceramic membrane should be between about 2 μm to about 10 μ
M or about 2 μm to about 8 μm or about 2 μm to about 6 μm or about 2 μm to about 4 μm or about 3 μm.
It has been generally acknowledged that the film with relatively low cutoff value, i.e. milipore filter, particularly will emulsification for oil is efficiently separated with water
It is necessary that oil is efficiently separated with water.On the contrary, technical staff is often used without microfiltration membranes, i.e. cutoff value since about 0.5 μm
Film, because generally drop size can not be effectively separated from water between about 0.5 μm to about 20 μm of oil emulsion, causes to be wrapped
Penetrant containing at least about 100ppm oil emulsions.
However, the present inventor shows in surprise, relatively low cutoff value, i.e. cutoff value are less than 2 μm, particularly 1 μm or smaller
Microfiltration ceramic membrane is unsuitable for efficiently separating oil emulsion with polymer.It is believed that such film can block over time, therefore
Polymer is hindered to pass through it, the polymer is trapped in retentate together with the oil including oil emulsion.On the contrary, the present inventor is also
Show in surprise, higher cutoff value, i.e. cutoff value are 2 μm or bigger, particularly 2 μm to about 10 μm microfiltration ceramic membrane is suitable to will
Oil emulsion and total suspended solid are efficiently separated with polymer.In fact, having been obtained for the penetrant rich in polymer, it is only wrapped
Oil emulsion containing trace, i.e., about 20ppm or less oil emulsion.It is not wishing to be bound by theory, it is believed that oil emulsion is partly gathered
In film, without through it, and it is such accumulation driving and promote polymer together with water pass through film.It is also believed that passing through
Using cutoff value between about 2 μm to about 10 μm of microfiltration ceramic membrane, oil emulsion by accumulation as another filter layer in film,
This will promote polymer filtration to pass through film, and therefore drive it to be separated with oil.
When handling process of the present invention is incorporated into chemical enhanced oil production method to be recovered the oil from oil-containing geological stratification, its
Allow, using at least a portion penetrant obtained after filtration step, to be expelled to and contain will pass through direct injection or indirect injection
In oil formation.Therefore, this allows to inject again is expelled in oil bearing bed and included in the extracted oil extracted-water mixing in the past
Tackified polymer compound in thing and then separated recovered water and then the penetrant filtered.
In addition, when being incorporated into chemical enhanced oil production method, water process of the invention and the harvesting side for including the water process
Therefore method allows recycling at least a portion to be expelled to the tackified polymer compound in oil bearing bed in the past.Therefore, it allows to subtract
The amount of new (or fresh or non-recirculated) the tackified polymer compound being expelled to less needed for oil bearing bed.It also allows
Regulation will be expelled to the viscosity of the aqueous solution in oil bearing bed.
Handling process of the present invention has shown that several advantages, and it is general or specific for some applications.
It is not intended to exhaustion, it is believed that this technique allows to limit or even avoids fouling membrane.In fact, with tackified polymer chemical combination
Thing passes through microfiltration ceramic membrane (together with penetrant), and the viscosity of polymer concentration and fluid to be filtered is restricted.
When being incorporated into method for treating water, this technique may be used as (such as) carry out further membrane filtration step it
Preceding pretreatment.This will be helpful to be purified before re-use in the latent of tackified polymer compound.
When recovering the oil, this technique will be helpful to improve the effect of oil processing and harvesting.
Or, this technique can be used for extracting biopolymer from biomass, and more generally any other viscosity is higher than 5cp
Fluid.
After filtration step is carried out, other compounds can be added into penetrant.Other compounds can be selected from by
The group of consisting of：Other tackified polymer compounds, surfactant, solvent, alkali compounds, stabilizer and its mixing
Thing.
Recovered water can be about 0.5 × 105Pa to about 5 × 105Ceramic membrane filter is carried out under Pa pressure.Such pressure quilt
Referred to as transmembrane pressure.
Recovered water can carry out ceramic membrane mistake at a temperature of about 25 DEG C to about 110 DEG C, preferably from about 40 DEG C to about 100 DEG C
Filter.
Ceramic membrane filter step can be carried out under the continuous feed of recovered water.
During ceramic membrane filter step, the back flush of ceramic membrane can be carried out periodically.
Waste streams (or one part) can be disposed.Or or concurrently, waste streams (or one part) can be followed again
Ring enters recovered water (such as oil-aqueous mixtures, when being recovered the oil from oil-containing geological stratification) to the upstream of ceramic membrane filter equipment, with
Just ceramic membrane filter step is further carried out.
Or or concurrently, waste streams (or one part) can use processing unit rather than ceramic membrane filter equipment to enter one
Step processing.
Ceramic membrane filter unit can the structure comprising at least one porous material material all in one piece section and optionally perforated membrane.
Ceramic membrane filter unit may be embodied in housing.
Penetrant can be post-processed.Post processing can be to dilute penetrant with aqueous medium.
Tackified polymer compound can be water-soluble polymer；Or tackified polymer compound can be selected from and consist of
Group：Natural water-soluble copolymer, semi-synthetic water-soluble polymer, synthetic polymer or its mixture；Or increase
Adhesive aggregation polymerisable compounds can be the water-soluble polymer of synthesis.
Tackified polymer compound can be obtained by the polymerization of the monomer selected from the group consisted of：Nonionic list
Body, anionic monomer, optionally cationic monomer, optionally have hydrophobic monomer and its mixture.
Tackified polymer compound can be selected from the group consisted of：Non-ionic polymeric compound, anionic polymerization
Compound or its mixture；Or tackified polymer compound can be anionic polymerization compound；Or；Anionic polymerization compound
There can be about 10mol% to about 100mol% anion degree.
When being recovered the oil from oil-containing geological stratification, the penetrant comprising tackified polymer compound is with being injected directly into oil-containing
In layer.
Or, the penetrant comprising tackified polymer compound can be mixed into the aqueous solution before being expelled in oil bearing bed
In.Penetrant can be post-processed before being expelled in oil bearing bed.
Other compounds can be added in penetrant before oil bearing bed is expelled to.
Brief description of the drawings
The schematic diagram of Fig. 1-oil production method comprising handling process of the present invention, it includes optional step
The schematic diagram of Fig. 2-oil production method comprising the handling process using test unit (closed-loop path)
The schematic diagram (continuous feed) of Fig. 3-oil production method comprising the handling process using test unit
Fig. 4-and on uncoated SiC material all in one piece ceramic membranes, include poly- (acrylamide-co-acrylic acid sodium) polymer (MW=
The diagram that the filtrate permeability of water-polymeric blends 7MDa) is changed over time.
Fig. 5-and on uncoated SiC material all in one piece ceramic membranes, include poly- (acrylamide-co-acrylic acid sodium) polymer (MW=
The diagram that the filtrate permeability of water-polymeric blends 15MDa) is changed over time.
Fig. 6-on uncoated SiC material all in one piece ceramic membranes, oil-aqueous mixtures comprising 600ppm polymer (MW7MDa)
Filtrate permeability/oil is detained the diagram changed over time.
Fig. 7-and on uncoated SiC material all in one piece ceramic membranes, include poly- (acrylamide-co-acrylic acid sodium) polymer (MW=
7MDa, concentration is 600ppm), oily (1000ppm), the filtrate permeability of TSS (50ppm) oil-aqueous mixtures change over time
Diagram.
Fig. 8-and on uncoated SiC material all in one piece ceramic membranes, include poly- (acrylamide-co-acrylic acid sodium) polymer (MW=
7MDa, concentration is 600ppm), the filtrate permeability of the oil-aqueous mixtures (TSS is not present) of oily (1000ppm) changes over time
Diagram.
Fig. 9-on uncoated SiC material all in one piece ceramic membranes, the polymer for being 150ppm comprising concentration, concentration be 20ppm extremely
The diagram that the filtrate permeability of 50ppm TSS recovered water is changed over time.
Embodiment
As used herein, term " oil " refers to any kind of oil, i.e. light oil, heavy oil and/or coal tar.
As used herein, term " water-oil mixture " refers to the mixture directly harvested from oil bearing bed.
As used herein, the product that term " recovered water " refers to obtain from water-oil mixture and separated with oil.
As used herein, term " injection water ", " expelling water ", " injected current " and " injecting fluid " can with used interchangeably, and
Corresponding to the aqueous solution in oil bearing bed to be expelled to.
As used herein, term " retentate (stream) ", " concentrate (stream) " and " waste material (stream) " can be with used interchangeably.
As used herein, term substantially free refers to be less than about 200ppm or less than about 100ppm or is less than
About 60ppm or less than about 40ppm, or it means that " being free of ".
As used herein, acronym " CEOR " refers to " chemical enhanced to recover the oil ", and this is conventionally used for oil extract field
Term.
In the technique 100 shown in Fig. 1, wherein handling process is incorporated into oil production method, will include tackified polymer chemical combination
The recovered water 12 of thing is directed to the filter plant 140 comprising ceramic membrane (not shown) from oil-water separator 130, wherein carrying out
Filter step.Thus filtration step obtains the infiltration logistics 16 and waste streams (or concentrate) 15 for including tackified polymer compound.
Before being filtered by filter plant 140, recovered water 13 optionally can be directed to pretreatment unit from oil-water separator 130
135, the recovered water 14 (optional pre-treatment step) for obtaining pretreatment.Then can be by the recovered water 14 of pretreatment from pre-
Processing unit 135 is directed to filter plant 140.
Recovered water 12 (or 13) can be obtained from oil-aqueous mixtures 10, and oil-aqueous mixtures 10 are harvested from oil bearing bed 110.
In fact, oil-aqueous mixtures 10 can be adopted from oil bearing bed 110 via the producing well 120 being in fluid communication with oil bearing bed 110
Receive.Oil-aqueous mixtures 10 can be directed to oil water separator 130 from producing well 120, and wherein it will carry out water-oil separating step.
From this separating step, oily product 11 (being extracted) and recovered water 12 will be obtained.
Penetrant 16 can be directed to injector well 160 from filter plant, to be expelled to as injection water 19 in oil bearing bed
110.Before being expelled to via injector well 160 110 in oil bearing bed, penetrant 17 optionally can draw from filter plant 140
Post-processing unit 150 is led, to obtain the penetrant 18 (optional post-processing step) by post processing.By oozing for post processing
Then saturating thing 18 can be directed to injector well 160 from post-processing unit 150, for being expelled in oil bearing bed 110.
Tackified polymer compound
The aqueous solution, also referred to as " injection water ", is included tackified polymer compound (referred to herein as " polymer ").These polymerizations
Thing is intended to improve recovery ratio by viscosity regulation.In fact, when such polymer is added in the aqueous solution to be injected, inclining
To in increasing its viscosity, this improves mobility ratio of the aqueous solution relative to oil.The viscosity increase of the aqueous solution can reduce viscous fingering,
Viscous fingering, which refers to wherein diluter aqueous solution and thicker oil, causes " finger " of the aqueous solution mobile, without in aqueous solution stream
Entrained oil.The viscosity of the increase aqueous solution to be injected reduces this " finger " phenomenon, and causes the intensified oil reduction from stratum.It is logical
It is commonly incorporated into the oil viscosity that polymer makes viscosity increase in oil bearing bed until its concentration in the aqueous solution to be injected.This inclines
To in realize closer to 1 mobility ratio, enabling by avoiding the finger through oil pit, better profit from water from rock
Oil is swept in drive.It also likely to be present the related viscosity problem in stratum, the permeability on such as stratum.Generally, when in-place permeability is between about
10mD to about 10,000mD, or 50mD between about 10,000mD when, oil-water mobility ratio be polymer addition control because
Element.
Tackified polymer compound can be water-soluble polymer；Or it can be selected from the group consisted of：Naturally
Water-soluble polymer, semi-synthetic water-soluble polymer, synthetic polymer or its mixture.
Natural water-soluble copolymer can be selected from the group consisted of：Xanthans, guar gum, scleroglucan, split pleat
Rhzomorph, cellulose derivative (such as carboxymethyl cellulose) or its mixture.
In a particular embodiment, tackified polymer compound can be the water-soluble polymer of synthesis.The water-soluble poly of synthesis
Compound can be obtained by the polymerization of non-ionic monomer and anionic monomer.
Non-ionic monomer can be selected from the group consisted of：Acrylamide, Methacrylamide, the N- of acrylamide
N- unitary derivative, the N of acrylamide of unitary derivative, Methacrylamide, N derivatives, the N of Methacrylamide, N spread out
Biology, acrylate, methacrylate and its mixture.Preferably, non-ionic monomer is acrylamide.
Anionic monomer can be selected from the group consisted of：Monomer with carboxylic acid functional, with sulfonic acid function
Monomer, the monomer with phosphonic acid functional groups, their salt and its mixture of group；Or selected from the group consisted of：
Acrylic acid, acrylamide tert-butyl group sulfonic acid (ATBS), their salt and its mixture.Salt can be selected from the group consisted of
Group：Alkali metal salt, alkali salt, ammonium salt and its mixture.
In addition to non-ionic monomer and anionic monomer, other monomers can also be used, including cationic monomer, have
Hydrophobic monomer and/or other monomer.Water-soluble polymer can be obtained by the polymerization of the following：It is at least one
Non-ionic monomer, at least one anionic monomer, optionally at least a kind of cationic monomer and/or optionally at least a kind of hydrophobic
The monomer of property scope between about 0.001mol% and about 1mol%.
Cationic monomer can be selected from the group consisted of：Quaternized or salinization acrylate
(DMAEA), quaternized or salinization dimethylaminoethyl methacrylate (DMAEMA), diallyldimethylammonium chloride
(DADMAC), acrylamido propyl trimethyl ammonium chloride (APTAC), Methacrylamide hydroxypropyltrimonium chloride (MAPTAC)
And its mixture.
Can be selected from the group consisted of with hydrophobic monomer：With alkyl, aralkyl or ethoxylation chain
(methyl) acrylate；The derivative of (methyl) acrylamide with alkyl, aralkyl or dialkyl group chain；Cation allyl
Radical derivative；Anion or cation hydrophobic (methyl) acryl derivatives；(methyl) acrylamide with hydrophobic chain
Anion or cationic monomer derivative and its mixture.
Other monomers-replacement non-ionic monomer, anionic monomer, cationic monomer or with hydrophobic monomer-can be with
Selected from (such as) NVP (NVP), acryloyl morpholine (ACMO) or its mixture.
Tackified polymer compound can be straight chain or structuring." structuring " is referred not only to by a linear fraction (i.e.
The monomer of polymerization) composition polymer, and refer to the polymer with star, pectination, or there are side chain, side chain tool in the side of main chain
There is the polymer of pendant groups.
Polymerization can use any suitable polymerization technique well known in the art to carry out.Suitable technology includes including choosing
From the technology of the polymerization procedure of the group consisted of：Polymerisation in solution, suspension polymerisation, gel polymerisation, precipitation polymerization, emulsion are gathered
(aqueous or anti-phase) or micellar copolymerization are closed, is preferably selected from selected from the group being made up of inverse emulsion polymerization or gel polymerisation.
In a preferred embodiment, polymerization procedure is radical polymerization." radical polymerization " refers in ultraviolet irradiation, occasionally
Nitrogen initiator, redox initiator, thermal initiator with and combinations thereof in the presence of the polymerization procedure that carries out.It is used as alternative
Case, controlled free radical polymerization (CRP) or matrix polymerization are also possible.
If desired, separating step can be carried out after polymerization procedure, such as it is poly- to obtain by being spray-dried or precipitating
Compound powder.For example spray drying technology is disclosed in《Spray Drying Handbook (Spraydrying handbook)》, K.Masters
In.
Polymerization is typically the radical polymerization preferably by inverse emulsion polymerization or gel polymerisation.By radical polymerization,
We include the radical polymerization and also controlled free radical polymerization by U.V., azo, redox or thermal initiator
(CRP) technology or matrix polymerization technology.
Tackified polymer compound can be nonionic or anion；It is preferred that having between about 10mol% to about
The tackified polymer compound of 100mol% anion degree.The anion degree of such scope attracts attention, and is because its long-time
Ground strengthens the viscosity potentiality of water, particularly via intermolecular linkage, especially when aqueous medium is salt solution.
Polymer can have the molecular weight between about 1MDa to about 30MDa, preferably about 7MDa to about 25MDa.
Recovered water
Recovered water includes tackified polymer compound.
The viscosity of recovered water can between about 1.5mPa.s to about 500mPa.s or about 3mPa.s to about 200mPa.s,
Or about 3mPa.s to about 100mPa.s.
The temperature of recovered water can be between about 5 DEG C to about 110 DEG C, preferably from about 40 DEG C to about 100 DEG C.
Based on total recovered water, recovered water can include about 50ppm to about 5000ppm, and preferably from about 100ppm is to about
2000ppm, more preferably from about 200ppm to about 1000ppm polymer.
Filtration step
Handling process of the present invention also includes and recovered water is directed into filter plant and is filtered stagnant to obtain to recovered water
Stay the step of logistics and infiltration logistics.This step is referred to herein as " filtration step ".
Ceramic membrane
Filter plant includes microfiltration ceramic membrane (also referred to as microfiltration ceramic membrane unit, is referred to herein as " filter element ").Cross
During filter, obtain being detained logistics and permeate logistics.
The cutoff value of filter element be about 2 μm to about 10 μm or about 2 μm to about 8 μm or about 2 μm to about 6 μm or
About 2 μm to about 4 μm or about 3 μm of person.The advantage that such specific cutoff value is shown is that it allows to obtain and includes tackified polymer
The infiltration logistics of compound.Such specific cutoff value also allows to obtain substantially free of suspended solid, free oil and/or oil emulsion
Penetrant.
The penetrant obtained during filtering includes the increased compound of viscosity.
The penetrant obtained during filtering is substantially free of suspended solid, free oil and oil emulsion.
Filter element can include the structure of at least one porous material material all in one piece section.The porous material for forming material all in one piece section is preferred
For ceramics.Ceramic porous material can be selected from the group being made up of SiC.
Each material all in one piece limits multiple passages.Filter element can include single material all in one piece section.Or, filter element can be included
The assembling of material all in one piece section.
Material all in one piece section can have circle, the cross section of square, hexagon, rectangle, triangle or any other suitable
Cross section.
Filter element can also include perforated membrane.Perforated membrane can be applied on the wall of material all in one piece section passage.It is porous when existing
During film, porous monolith is used as porous film support.It is preferably ceramics in the presence of perforated membrane.Ceramic porous membrane can be selected from by
The group of consisting of：SiC、TiO2、Al2O3。
Or, filter element can not include perforated membrane.
Filter plant can include housing, and wherein filter element is accommodated in the housing.Housing can also include penetrant mistake
Filter area.In the presence of penetrant filtering area, it can be contained in the space between filter element and housing.
Recovered water can be about 0.5 × 105Pa to about 5 × 105Ceramic membrane filter is carried out under Pa pressure.
Recovered water can carry out ceramic membrane filter at a temperature of about 25 DEG C to about 110 DEG C.
Ceramic membrane filter step can be carried out under continuous feed.
During ceramic membrane filter step, ceramic membrane can carry out back flush.
Penetrant
The penetrant obtained during extraction water filtration includes tackified polymer compound.Separating step and then filtration step are therefore
The tackified polymer compound that will be expelled in the past in oil bearing bed is allowed to be recycled in penetrant.
Penetrant further includes aqueous medium, preferably water.
Pre-treatment step
After the separation step with before filtration step, handling process of the present invention can further include and use conventional meanses
Pretreatment 135.Such conventional meanses can be selected from：
- mechanical degradation or chemical degradation are to reduce aqueous viscosity；
- coalescence, flotation, emulsification, hydrocyclone are removed to increase droplet size；And/or,
The filtering of-automatically cleaning sets to reduce the total suspended solid load in stream.
Post-processing step
Handling process of the present invention can also be comprising the step of post processing at least a portion penetrant.This step is at this
Referred to herein as " post-processing step ".Therefore produce treated infiltration logistics (also referred to as by the infiltration logistics of post processing).
Post-processing step can be into penetrant to add aqueous medium-in such cases, and post-processing step is
Dilution step.Aqueous medium can be water.When carrying out this step, treated penetrant is referred to as the infiltration of dilution
Thing.
Penetrant:Aqueous medium thinner ratio can be between about 1:100 to about 10:1st, preferably from about 1:10 to about 5:In the range of 1.
In post-processing step, obtained during to filtering at least about the 10% or at least about 25% of penetrant or extremely
Few about 50% or at least about 60% or at least about 70% or at least about 80% or at least about 90% or about
100% is handled.
Post-processing step can be the combination of tackified polymer compound and penetrant.Purpose is to improve gluing for penetrant
Degree, and re-establish appropriate viscosity for injection.The type of tackified polymer compound is as hereinbefore.Based on total penetrant, increase
The amount of adhesive aggregation polymerisable compounds can be about 100ppm to about 10000ppm or about 200ppm to about 5000ppm or about
500ppm to about 4000ppm tackified polymer compound.
Combination can be in the form of a solution, dispersion or particle form tackified polymer chemical combination is added into penetrant
Thing.Generally, the amount of the tackified polymer compound added in the penetrant containing recycling tackified polymer compound is less than initial
The amount of the tackified polymer compound contained in injection solution.
When tackified polymer compound is particle form, the aqueous medium in dispersing apparatus can be dissolved in.Infiltration
Thing or dilution type may be used as the aqueous medium in polymer dispersing apparatus, to prepare the water-soluble of tackified polymer compound
Liquid.The example of dispersing apparatus is document United States 8, the polymer chips unit (PSU) described in 186,871, and it allows profit
The concentration polymerization aqueous solution is prepared with the tackified polymer compound in powder type.
Post-processing step can also be constituted by increasing damp step (such as through the filtering of walnut shell filter or equivalent device).
Strengthen step
After ceramic membrane filter step, penetrant (or one part) can carry out enhancing step.It will produce enhanced
Permeate logistics.Enhancing step can be carried out by adding suitable other compounds.
Other compounds can be added in penetrant before oil bearing bed is expelled to.Other chemical combination to be added
Thing can be selected from the group consisted of：Other tackified polymer compounds, surfactant, alkali compounds, antisludging agent, chela
Mixture, stabilizer, oxygen scavenger and its mixture.These compounds have been described above.
When handling process is incorporated into collecting method, it can implement to strengthen step before injecting step again.
It may need further to add tackified polymer compound into penetrant and/or the aqueous solution.If situations below can
Such further addition can be needed：
(1) it is present in a part of polymerizable compound in penetrant thermal degradation, change during the drive of oil bearing bed is swept
Learn degraded and/or mechanical degradation；And/or
(2) needs adjust the viscosity of the aqueous solution to be injected and/or penetrant.
The aqueous solution
The aqueous solution to be injected includes tackified polymer compound and aqueous carrier.Aqueous carrier can be water.
The brookfield viscosity of the aqueous solution can be between about 1.5mPa.s to about 600mPa.s or about 5mPa.s to about
300mPa.s.Brookfield viscosity is to be measured with Brookfield viscometer at 25 DEG C with appropriate axle.
By total aqueous solution, the aqueous solution can be comprising about 100ppm to about 10000ppm or about 200ppm to about
5000ppm or about 500ppm to about 4000ppm tackified polymer compound.
The aqueous solution can include other compounds.Other compounds can be selected from the group consisted of：Alkaline reagent,
Surfactant, stable compound and its mixture.
Alkaline reagent
Alkaline reagent can be selected from the group consisted of：Alkali metal hydroxide, ammonium hydroxide, carbonate, carbonic acid
Hydrogen salt and its mixture.Alkaline reagent can be (for example) sodium carbonate.
Surfactant
Surfactant can be selected from the group consisted of：Anion surfactant, amphion surface-active
Agent and its mixture；Or the group consisted of：Alkyl sulfate, alkyl ether sulfate, aralkyl, aralkyl
Base ether sulfate, alkylsulfonate, alkylether sulfonate, aromatic alkyl sulfonate, aralkyl ethers sulfonate, alkylphosphonic, alkane
Base ether phosphate, aralkylphosphates, aralkylether phosphates, alkyl phosphonate, alkyl ether phosphonate, alkyl aryl phosphine hydrochlorate,
Aralkyl ethers phosphonate, alkyl carboxylate, alkyl ether carboxy acid salt, aralkyl carboxylic acid's salt, aralkyl ethers carboxylate, alkyl, polyether,
Aralkyl polyethers and its mixture.
At present, term " alkyl " is interpreted as saturation or unsaturation, with 6 to 24 carbon atoms, branch or non-branch, straight chain
Or the alkyl of one or more annular units is optionally included, it optionally includes one or more hetero atoms (O, N, S).Will
Aralkyl is defined as including the alkyl as defined above of one or more aromatic rings, and the aromatic ring is optionally comprising one or more miscellaneous
Atom (O, N, S).
Stable compound
Stable compound (stabilizer) can be used for suitably protecting tackified polymer compound from (such as) thermal degradation, change
Learn the compound of degraded and/or mechanical degradation.The example of suitable stabilizer is in PCT Patent Application case WO2010/133258
There is provided, it is incorporated herein by reference.
CEOR methods
The handling process of the present invention may be integrally incorporated in collecting method, for exampleChemical enhanced oil recovery (CEOR) method.It is such
Method can be used for recovering the oil from oil-containing geological stratification.
The chemical enhanced oil production method can be implemented by using tackified polymer compound.Use tackified polymer chemical combination
The methods described of thing can be comprised the steps of：
- aqueous solution is expelled in oil bearing bed, the aqueous solution includes tackified polymer compound；
Oil-aqueous mixtures that-harvesting is obtained from the oil bearing bed；
- processing oil-aqueous mixtures, for oily product to be separated with recovered water, wherein recovered water includes tackified polymer chemical combination
Thing；
- guide recovered water to filter plant, and recovered water is filtered, it is detained logistics and infiltration logistics to obtain,
Wherein filter plant includes the microfiltration ceramic membrane unit that cutoff value is about 2 μm to about 10 μm, and wherein penetrant includes the thickening
Polymerizable compound, and wherein penetrant is substantially free of suspended solid, free oil and oil emulsion.
- penetrant is expelled in oil bearing bed.
Injecting step
CEOR methods can include the step being expelled to the aqueous solution in oil bearing bed.This step is referred to herein as " note
Penetrate step ".
Harvest step
CEOR methods can also comprising harvesting from oil-aqueous mixtures that oil bearing bed is obtained the step of.This step is herein
In be referred to as " harvesting step ".Oil-aqueous mixtures include the oil being initially present in oil bearing bed and are expelled in oil bearing bed
The aqueous solution.
Separating step
CEOR methods can also include the step of processing oil-aqueous mixtures are so that oily product to be separated with recovered water.This step
It is referred to herein as " separating step ".Separating step can use any suitable system to carry out, for example comprising knockout drum (for example
There is no those of plate and/or those with hang plate separator) system, hydrocyclone, using air spray flotation
System, the system using dissolved air flotation, the system comprising wall type nutshell filters, dependence coalescence component and filter
System.
Injecting step again
CEOR methods can also include the step being expelled to penetrant in oil bearing bed.This step is referred to herein as
" injecting step again ".
Penetrant can be expelled in the identical injector well of former injection of aqueous solution (referring to injecting step).Or, can be with
Penetrant is expelled in different injector wells.
According to expected embodiment, penetrant can be injected directly into oil bearing bed (direct injection)；It will permeate
After thing is further processed, enhanced penetrant (enhancing step, followed by directly step) can be injected；Penetrant can be with
Mixed before the injection with " fresh " aqueous solution (blend step, then injecting step)；Enhanced penetrant can before the injection with
The mixing of " fresh " aqueous solution (strengthens step, then blend step, then injecting step)；Penetrant is mixed with fresh aqueous solution
Close, then strengthen, then inject.
Direct injection
The penetrant of processing can be injected directly into oil bearing bed.In this embodiment, the aqueous solution to be injected because
This includes penetrant.
As detailed below, before injection whenever any enhancing step is carried out, enhanced penetrant can be with direct injection
Into oil bearing bed.
Blend step and/or co-injection step
Before being expelled in oil bearing bed or before direct injection, penetrant may be mixed in in the aqueous solution.It is real herein
Apply in example, after penetrant is mixed with the aqueous solution, gained mixture is expelled in oil bearing bed.
As detailed below, before injection whenever any enhancing step is carried out, enhanced penetrant may be mixed in water
In solution.
CEOR methods
CEOR methods cover any method being expelled to penetrant in oil bearing bed.CEOR methods can be selected from by following
The group of composition：Intensified oil reduction technique, oil reservoir yield-increasing technique, the drag reduction technique sacrificed in absorbing process or water drive oil.
Intensified oil reduction (EOR) method is related to continuous and injects the solution for including polymer for a long time, so as to by oil reservoir from
Injector well drives and sweeps to producing well.Purpose is not processing reservoir region, but its totality, to recover the oil as much as possible.For this reason, it may be necessary to
The much bigger aqueous solution of volume injected, it typically is the 50% to 500% of pore volume, even more high.In producing well or well, adopt
Receive aqueous, oiliness and the sometimes mixture of gas.
Oil reservoir method for increasing covers uniformity technique, mobility control, plugging technology, and the technique is characterised by injection
Solution comprising polymer, it is restricted in terms of volume, close to produce local phenomenon, as uniformity in oil reservoir
The region of high permeability is sealed, for " closing water ", blocks wherein undesirable water to enter the region of subsurface formations.Injection is typically
Carried out within the extremely short period of several days by injector well or by producing well, and typically smaller than one month, and body
5% of product less than the pore volume of oil reservoir.Pore volume corresponds to the volume that is not occupied by rock in oil reservoir, this provide with it is permeable
The correlation in region.Generally, tackified polymer compound before being expelled in oil bearing bed or original place and crosslinking agent (it is organic or
Metal ion) crosslinking.Gained cross-linked polymer formation gel.
Sacrifice adsorption method and include chemical enhanced oil recovery step, wherein penetrant is expelled in oil bearing bed to polymerize
Compound is absorbed on the inner surface of oil reservoir.Polymerizable compound is absorbed on surface and as sacrifice agent.This step generally exists
The injecting fluid that CEOR techniques start with oligomerization compound concentration is carried out, and allows to reduce increasing during inject next time
The absorption of adhesive aggregation polymerisable compounds.
Drag reduction technique during water drive oil is also considered as chemical enhanced DP technology, as it means that penetrant
Injection.Polymerizable compound is used as drag reducer, and reduces and inject a fluid into power (injection pressure) needed for oil bearing bed.It is logical
Often, drag reduction technique means the injecting fluid using oligomerization compound concentration.
Example
Different types of ceramic membrane is compared, to assess its applicability and its effect for separating polymer with oil
Really.Especially, its applicability and its effect for being used to obtain the following have evaluated：Particularly comprise suspended solid, trip
From oil, grease, oil emulsion waste streams；With the infiltration logistics comprising polymer.
Example 1- polymer concentrations compare
Tested add the aqueous solution polymer concentration to its through different ceramic membranes permeability influence.
Following polymer is tested：
Poly- (acrylamide-co-acrylic acid sodium) (herein referred as " 7MDa polymer ") that-molecular weight is 7MDa,
Poly- (acrylamide-co-acrylic acid sodium) (herein referred as " 15MDa polymer ") that-molecular weight is 15MDa.
The polymer of four kinds of various concentrations, i.e. 200ppm, 600ppm, 600ppm degraded (7MDa polymer are tested
Except test on uncoated SiC material all in one piece films) and 1000ppm.Such as feasible, polymer is subjected to high pressure and then reduction pressure
And degrade.
Following ceramic membrane is tested：
- uncoated SiC material all in one piece ceramic membranes, film cutoff value is about 5 μm to about 10 μm；
The TiO of-standard2Microfiltration ceramic membrane, film cutoff value is about 0.1 μm；
Filtering is carried out under following experiment condition：
- salt solution：4830TDS, 115TDS divalence, 1310TDS carbonate
- temperature：38℃
-TMP：1 bar
- concentration speed：3m/s
On uncoated SiC material all in one piece ceramic membranes, the filtration and infiltration rate of 7MDa polymer changes with time such as Fig. 4 institutes
Show.On uncoated SiC material all in one piece ceramic membranes, the filtration and infiltration rate of 15MDa polymer changes with time as shown in Figure 5.
It can show that uncoated SiC materials all in one piece ceramic membrane after tested is to 7MDa and 15MDa polymer two from these experiments
The permeability of person is extremely strong, and permeability is reduced with the increase of polymer concentration, and permeability increases over time.
Caused by due to cutoff value difference in addition to the gap of permeability, standard TiO after tested is used2MF ceramic membranes
Similar observation result is obtained, that is, shows that permeability is reduced as polymer concentration increases.Have also shown, for identical dense
The polymer of degree, when depolymerization, the permeability of polymer is higher.
On two kinds of films, have shown that permeability increases over time.It is not wishing to be bound by theory, it is believed that
Film is not complete moistening (wetting) when experiment starts, and as film becomes complete moistening, permeability increase；Because in head tank
Penetrant and both concentrates recycling, polymer slowly degrades；And the concentration of polymer drops with the progress of test
It is low.
Oil on example 2- ceramic membranes is detained (closed-loop path)
The effect of the permeability of ceramic membrane is tested, this depends on the discontinuous addition of oil.
The schematic diagram of test unit is as shown in Figure 2.In the test unit 200 shown in Fig. 2, feed water is via recirculation pump
220 are directed to filter plant 230 from head tank 210, filter wherein.Infiltration logistics and waste streams are obtained from this filtration step,
Both it is admitted to head tank 210.Transmembrane pressure is applied to filter plant (not shown).
Following polymer is tested：
- molecular weight be 7MDa, concentration be 600ppm poly- (acrylamide-co-acrylic acid sodium) (herein referred as " 7MDa gathers
Compound ")
Following ceramic membrane is tested：
- uncoated SiC material all in one piece ceramic membranes, film cutoff value is about 5 μm to about 10 μm；
Filtering is carried out under following experiment condition：
- salt solution：4830TDS, 115TDS divalence, 1310TDS carbonate
- temperature：38℃
-TMP：1 bar
- concentration speed：3m/s
- filtering operation about 500min；
- in about 100min to carrying out back flush between about 350min, per 6min back flushes 0.75s；
- crude oil is periodically added into head tank.
Filtration and infiltration rate changes with time as shown in Figure 6.
It has been shown that permeability keeps stable (about 3500L/ (h.m over time2.b) to about 4500L/ (h.m2.b) it
Between).
Oil content is very low when also having shown that beginning, is then up to about 70ppm.It is obvious that starting reverse arteries and veins
After punching, this Cmax has been reached.On the contrary, when reverse impulse stops, oil concentration is re-lowered to about 13ppm value.
It is not wishing to be bound by theory, it is believed that oily envelope absorbs, and causes the oil concentration in head tank to reduce, and polymer is with about
The speed of 90% to about 100% passes through film.
Every time after test, original place cleaning (CIP) is carried out using clean solution (surfactant solution with neutral pH).
CIP allows to clean ceramic membrane, especially by the compound and material that removal is accumulated on material all in one piece from ceramic membrane.CIP allows
By resume permeability to the level equal with new material all in one piece (filter plant).
Oil on example 3- ceramic membranes is detained (continuous feed)
The effect of the permeability of ceramic membrane has been tested by continuously extracting penetrant and concentrate.
The schematic diagram of test unit is as shown in Figure 3.In the test unit 300 shown in Fig. 3, feed water is directed to charging
Tank 310.Then feed water is continuously directed to filter plant 330 from head tank 310 via recirculation pump 320, filtered wherein.
Infiltration logistics and waste streams are obtained from this filtration step.Waste streams are led back into head tank 310 from filter plant.By transmembrane pressure
It is applied to filter plant (not shown).
Following compound is tested：
- concentration is 600ppm 7MDa polymer；
- concentration is 1000ppm oil；
- concentration is 50ppm and granularity is about 100 μm to about 150 μm of total suspended solid
Following ceramic membrane is tested：
- uncoated SiC material all in one piece ceramic membranes, film cutoff value is about 5 μm to about 10 μm；
Filtering is carried out under following experiment condition：
- salt solution：4830TDS, 115TDS divalence, 1310TDS carbonate
-TMP：1 bar
- concentration speed：3m/s
25 DEG C of-temperature；
- continuously extract penetrant and concentrate；
- periodically add fresh solution to head tank；
Filtration and infiltration rate changes with time as shown in Figure 7.
Have shown that, although feed and do not concentrate during testing, but permeability declines over time.Be not intended to by
Theoretical constraint, it is believed that such decline is probably by oil enters the temperature for the test reported before the accumulation in film and ratio
Low, this weakens water through film, and therefore weakens polymer through film.
After such surfactant solution, citric acid and sodium hypochlorite cleaning with various clean solutions, with neutral pH,
Permeability (not shown) can be recovered.
Oil on example 4- ceramic membranes is detained (continuous feed)
The effect of the permeability of ceramic membrane has been tested by continuously extracting penetrant and concentrate.Test unit shows
It is intended to as shown in Figure 3.
Following compound is tested：
- concentration is 600ppm 7MDa polymer；
- concentration is 1000ppm oil；
- without TSS
Following ceramic membrane is tested：
- uncoated SiC material all in one piece ceramic membranes, film cutoff value is about 5 μm to about 10 μm；
Filtering is carried out under following experiment condition：
- salt solution：4830TDS, 115TDS divalence, 1310TDS carbonate
-TMP：1 bar
- concentration speed：3m/s
40 DEG C of-temperature
- continuously extract penetrant and concentrate；
- at the time of 13min, 21min, 32min, 48min, 65min, 85min, 105min and 130min, will be fresh molten
Liquid periodically adds head tank
Filtration and infiltration rate changes with time as shown in Figure 8.
It has been shown that during the Part I of test, permeability slowly declines, and during the Part II of test its
Kept in relatively low value stable.It is not wishing to be bound by theory, it is believed that during the Part I of test, oil is gathered in film
Cause the reduction of permeability.However, through after a period of time, reaching stable state, wherein the oil gathered is produced with perseverance
Determine another filter layer of permeability.What the oil concentration in penetrant was seemingly stablized, value is about 20ppm.By contrast, retentate
In oil concentration it is unstable, it is believed that this be due into head tank by batch add charging.Substitute or the explanation of supplement is probably dense
The increase of degree is also likely to be because oil is gathered and discharged by film.
After cleaning film device twice with the surfactant solution with neutral pH, permeability (not shown) can be recovered.
The processing (closed-loop path) of the actual recovered waters of example 5-
The effect of the permeability of ceramic membrane has been tested by the recirculation circuit of penetrant and concentrate.Test unit
Schematic diagram it is as shown in Figure 2.
The recovered water with consisting of is tested：
- concentration is 150ppm polymer；
- concentration is about 20ppm to 50ppm TSS；
Following ceramic membrane is tested：
- uncoated SiC material all in one piece ceramic membranes, film cutoff value is about 5 μm to about 10 μm；
Filtering is carried out under following experiment condition：
-TMP：1 bar
- concentration speed：3m/s
35 DEG C of-temperature
The recycling (closed-loop path) of-penetrant and concentrate；
- for a wherein paths, in 19min, 30min, 47min, 58min, run dead end pattern 5min.
Filtration and infiltration rate changes with time as shown in Figure 9.
It has been shown that during the Part I of test, permeability slowly declines, and during the Part II of test its
Kept in relatively low value stable.
The chemical enhanced DP technologies of example 6-
By injecting the aqueous solution comprising molecular weight for 15MDa poly- (acrylamide-co-acrylic acid sodium), rock core is utilized
The chemical enhanced DP technology (step 1) of displacement system simulation.Using the ceramic membrane filter recovered water of the present invention to obtain penetrant
(step 2), and the new aqueous solution (step 3) for wherein having dissolved fresh polymer is prepared using penetrant.Finally, inject
Obtained aqueous solution (step 4).
Step 1- injects the aqueous solution for including poly- (acrylamide-co-acrylic acid sodium) (15MDa)
The rock core streamer with following characteristic is performed to penetrate：
- temperature：50℃
- mean permeability：1200mD sandstone
The proportion of-oil：22°API.
The aqueous solution comprising polymer has consisting of and property：
-NaCl：3300mg/L
-KCl：70mg/L
-CaCl2, 2H2O：150mg/L
-MgCl2, 6H2O：85mg/L
-Na2SO4：30mg/L
-NaHCO3：100mg/L
- dissolved oxygen：20ppb
- total suspended solid：5ppm
-pH：7.5
- polymer concentration：1000ppm
- viscosity：25cP
- specific filtration resistance：1:1
Recovery ratio is 38%.
1000ppm polymer is added without, recovery ratio is only 25%.
Step 2- utilizes ceramic membrane filter recovered water of the invention
In the recovered water side of rock core stream, polymer is produced together with water.Recovered water comprising polymer has following characteristic：
-NaCl：3000-3500mg/L
-KCl：50-100mg/L
-CaCl2, 2H2O：120-170mg/L
-MgCl2, 6H2O：60-100mg/L
-Na2SO4：25-40mg/L
-NaHCO3：40-100mg/L
- dissolved oxygen：20ppb
-pH：7.5
- total suspended solid：10-15ppm, average-size is 10 μm
Oil concentration in-water：300-700ppm, average-size is 12.5 μm
- polymer concentration：500ppm
- viscosity：3.5cP
Recovered water is filtered on uncoated SiC material all in one piece ceramic membranes, film cutoff value is about 5 μm to about 10 μm, and is obtained
Penetrant, it has following characteristic：
- polymer concentration：500ppm
NaCl：3000-3500mgL
-KC1：50-100mg/L
-CaC12, 2H2O：120-170mg/L
-MgCl2, 6H2O：60-100mg/L
-Na2SO4：25-40mg/L
-NaHCO3：40-100mg/L
- dissolved oxygen：20ppb
-pH：7.5
- total suspended solid：5ppm, average-size is 10 μm
Oil concentration in-water：5-20ppm
- polymer concentration：500ppm
- viscosity：3.5cP
The polymer being initially included in recovered water is come across in penetrant, and can be recycled for new injection.
The preparation of the new thickened aqueous solutions of step 3- injections
Two kinds of different aqueous solution are prepared with penetrant.
By the way that 1000ppm poly- (acrylamide-co-acrylic acid sodium) (15MDa) newly added to be dissolved in penetrant and obtain
The viscosity for obtaining water solution A acquisitions newly is 32cP, and specific filtration resistance is 1:1
Obtained by the way that 700ppm poly- (acrylamide-co-acrylic acid sodium) (15MDa) newly added is dissolved in penetrant
New aqueous solution B.The viscosity of acquisition is 25cP, and specific filtration resistance is 1:1
Step 4- injects new thickened aqueous solutions A and B
The identical rock core stream of step 1 is made using new thickened aqueous solutions A and B.Obtain following recovery ratio.
| New thickened aqueous solutions A | New thickened aqueous solutions B | |
| Recovery ratio | 43% | 38% |
The technique of the present invention has the advantage recycled a part of polymer for new injection.Polymer can be reduced
Consume (1000ppm to 700ppm) to obtain identical recovery ratio, or identical polymer consumption can kept
Recovery ratio (38% to 43%) is improved while (1000ppm).
Claims (14)
1. a kind of handling process of recovered water, the recovered water is obtained from the method using tackified polymer compound, the processing
Technique is comprised the steps of：
Obtain oil-aqueous mixtures；
Oil-the aqueous mixtures are handled, for oily product to be separated with recovered water, wherein the recovered water is poly- comprising the thickening
Polymerisable compounds；
The recovered water is guided to filter plant, and the recovered water is filtered, is detained logistics and penetrant to obtain
Stream, wherein the filter plant includes the microfiltration ceramic membrane unit that cutoff value is about 2 μm to about 10 μm, wherein the penetrant bag
Containing the tackified polymer compound, and wherein described penetrant is substantially free of suspended solid, free oil and oil emulsion.
2. handling process according to claim 1 the, wherein oil-aqueous mixtures are obtained from oil bearing bed；And wherein
The recovered water is obtained from using the chemical enhanced oil production method of tackified polymer compound.
3. the handling process according to foregoing any claim, wherein the recovered water is about 0.5 × 105Pa to about 5 ×
105Ceramic membrane filter is carried out under Pa pressure.
4. the handling process according to foregoing any claim, wherein temperature of the recovered water at about 25 DEG C to about 110 DEG C
Degree is lower to carry out ceramic membrane filter.
5. the handling process according to foregoing any claim, wherein the ceramic membrane filter is entered under continuous feed
OK.
6. the handling process according to foregoing any claim, wherein during the ceramic membrane filter step, it is periodically right
The microfiltration ceramic membrane back flush.
7. the handling process according to foregoing any claim, wherein the ceramic membrane filter unit is more comprising at least one
The structure of Porous materials material all in one piece section and optionally perforated membrane.
8. the handling process according to foregoing any claim, wherein the ceramic membrane filter unit is accommodated in the housing.
9. the handling process according to foregoing any claim, wherein the tackified polymer compound is water-soluble polymeric
Thing, or wherein described tackified polymer compound can be selected from the groups consisted of：It is natural water-soluble copolymer, semi-synthetic
Water-soluble polymer, synthetic polymer or its mixture；Or wherein described tackified polymer compound is the water of synthesis
Soluble polymer.
10. the handling process according to foregoing any claim, wherein the tackified polymer compound is following by making
Items polymerize and obtained：Non-ionic monomer, anionic monomer, optionally cationic monomer, optionally have hydrophobic monomer.
11. the handling process according to foregoing any claim, wherein the tackified polymer compound can be selected from by with
The group of lower composition：Non-ionic polymeric compound, anionic polymerization compound or its mixture；Preferably anionic polymerisation chemical combination
Thing；More preferably anionic polymerization compound of the anion degree between about 10mol% to about 100mol%.
12. the handling process according to foregoing any claim, wherein the handling process is further comprising post processing institute
The step of stating penetrant；Or wherein described handling process further includes the step of diluting the penetrant with aqueous medium.
13. the handling process according to foregoing any claim, wherein other compounds are added into the penetrant.
14. handling process according to claim 13, wherein other compounds are selected from the group consisted of：Its
Its tackified polymer compound, surfactant, alkali compounds, stabilizer and its mixture.
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| Application Number | Priority Date | Filing Date | Title |
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| US201462063992P | 2014-10-15 | 2014-10-15 | |
| US62/063,992 | 2014-10-15 | ||
| PCT/EP2015/073491 WO2016058961A1 (en) | 2014-10-15 | 2015-10-09 | Treatment of produced water, particularly obtained from a chemically enhanced oil recovery process using viscosity-increasing polymers |
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| CN107001089A true CN107001089A (en) | 2017-08-01 |
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| CN201580048465.7A Active CN106795749B (en) | 2014-10-15 | 2015-10-09 | Use the chemical strengthening oil recovery method of thickening high-molecular compound |
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| EP (2) | EP3206994B1 (en) |
| CN (2) | CN106795749B (en) |
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| BR (1) | BR112017007745B1 (en) |
| CA (1) | CA2958739C (en) |
| MY (1) | MY180917A (en) |
| PL (1) | PL3207213T3 (en) |
| RU (1) | RU2705055C2 (en) |
| WO (2) | WO2016058960A1 (en) |
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| WO2016058960A1 (en) | 2014-10-15 | 2016-04-21 | Snf Sas | Chemically enhanced oil recovery method using viscosity-increasing polymeric compounds |
| CN107605444B (en) * | 2016-07-12 | 2020-01-24 | 中国石油化工股份有限公司 | Polymer flooding method for heavy oil reservoir |
| AU2017298020B2 (en) * | 2016-07-20 | 2023-03-16 | Petróleo Brasileiro S.A. - Petrobras | Hybrid system and method for treating produced water and sea water to be re-injected into a subsea oil reservoir |
| GB2559410B (en) * | 2017-02-06 | 2020-04-15 | Equinor Energy As | Method |
| US10717920B1 (en) * | 2017-03-29 | 2020-07-21 | Angel Petroleum Technologies LLC | Viscosified water injection methods for enhancing hydrocarbon recovery from wells |
| US11472724B2 (en) * | 2018-11-26 | 2022-10-18 | Halliburton Energy Services, Inc. | Methods and systems for oil in water separation using oil specific viscosifier composition |
| CN109534581B (en) * | 2018-12-30 | 2022-07-12 | 大连博斯特科技有限公司 | Zero-discharge treatment process for cutting fluid wastewater |
| CN114605015A (en) * | 2020-12-08 | 2022-06-10 | 中国石油天然气股份有限公司 | Method for treating oil refining processing sewage |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3206994A1 (en) | 2017-08-23 |
| WO2016058961A1 (en) | 2016-04-21 |
| US20170247999A1 (en) | 2017-08-31 |
| EP3206994B1 (en) | 2020-07-01 |
| BR112017007745A2 (en) | 2018-01-30 |
| US20170233639A1 (en) | 2017-08-17 |
| CA2958739C (en) | 2022-08-30 |
| CN106795749B (en) | 2019-08-06 |
| CA2958739A1 (en) | 2016-04-21 |
| US10961836B2 (en) | 2021-03-30 |
| RU2017116480A (en) | 2018-11-15 |
| RU2705055C2 (en) | 2019-11-01 |
| EP3207213B1 (en) | 2019-04-17 |
| WO2016058960A1 (en) | 2016-04-21 |
| BR112017007745B1 (en) | 2022-01-18 |
| EP3207213A1 (en) | 2017-08-23 |
| PL3207213T3 (en) | 2020-03-31 |
| US10760399B2 (en) | 2020-09-01 |
| RU2017116480A3 (en) | 2018-12-24 |
| CN106795749A (en) | 2017-05-31 |
| AR102276A1 (en) | 2017-02-15 |
| MY180917A (en) | 2020-12-12 |
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